Pole assembly, shell and battery

Abstract

The utility model discloses a pole assembly, shell and battery, pole assembly includes pole body and anti-oxidation conductive piece, anti-oxidation conductive piece is provided on the one side of pole body and is electrically connected with pole body, the side of anti-oxidation conductive piece far away from pole body is used for being connected with external circuit. The anti-oxidation conductive part is arranged on one side of the pole body, the side, far away from the pole body, of the anti-oxidation conductive part is used for being connected with the external circuit, the anti-oxidation conductive part has an anti-oxidation function, and an insulated aluminum oxide film cannot be generated in air, so that poor contact between the pole assembly and the external circuit can be avoided, and the service life of the pole assembly is prolonged. And the anti-oxidation conductive piece can realize electric conduction between the pole and an external circuit, so that the stability and the reliability of connection between the battery and the external circuit are integrally improved.

Description

Technical Field

[0001] The utility model relates to the field of batteries, in particular to a pole column assembly, a shell and a battery. Background Art

[0002] The steel shell button battery has excellent sealing performance and can provide reliable power supply in different environments, so it is widely used in various microelectronic devices. However, with the development trend of electronic devices towards smaller size and higher performance, higher requirements are put forward for the structural stability and electrical performance of the steel shell button battery.

[0003] In the design of traditional steel shell button batteries, the pole column is usually arranged at the top end of the battery shell. Since aluminum has good electrical conductivity and relatively low cost, it has become a common material for manufacturing pole columns. However, the aluminum pole column is prone to form an insulating aluminum oxide film when exposed to air, resulting in poor contact between the pole column and the external circuit, and affecting the stability and reliability of the connection between the battery and the external circuit. Summary of the Utility Model

[0004] Embodiments of the utility model provide a pole column assembly, a shell and a battery to solve the problem that the aluminum pole column is prone to form an insulating aluminum oxide film, and improve the stability and reliability of the connection between the battery and the external circuit.

[0005] Specifically, the utility model provides a pole column assembly, including a pole column body and an anti-oxidation conductive member. The anti-oxidation conductive member is arranged on one side of the pole column body and is electrically connected to the pole column body.

[0006] Optionally, a groove is arranged on the pole column body, and the anti-oxidation conductive member is arranged in the groove.

[0007] Optionally, the diameter of the groove is 2-4 mm, and the depth of the groove is 0.05-0.2 mm.

[0008] Optionally, the difference between the diameter of the groove and the diameter of the anti-oxidation conductive member is 0.2 mm-0.8 mm;

[0009] The difference between the thickness of the anti-oxidation conductive member and the depth of the groove does not exceed 0.05 mm.

[0010] Optionally, the anti-oxidation conductive member is a nickel sheet or a stainless steel sheet, and a nickel layer is plated on the side of the stainless steel sheet facing away from the pole column body;

[0011] Alternatively, the anti-oxidation conductive member is a sprayed gold layer or a gold-plated layer formed on the surface of the pole column body.

[0012] Optionally, the pole body includes a columnar portion and an extension portion, the columnar portion is arranged on one side of the extension portion, and the anti-oxidation conductive component is located on a side of the extension portion away from the columnar portion.

[0013] Optionally, a projection of the columnar portion in the direction of the extending portion covers a projection of the anti-oxidation conductive part in the direction of the extending portion.

[0014] The utility model also provides a shell, characterized in that it comprises a shell and a pole assembly as described in any one of the above items; an opening is provided on the shell, and the anti-oxidation conductive part is located on a side of the pole body away from the opening.

[0015] Optionally, an insulating layer is provided between the pole body and the shell.

[0016] The utility model also provides a battery, comprising a battery core and a shell as described in any one of the above items, wherein the battery core is arranged in the shell.

[0017] The beneficial effects of the utility model are:

[0018] In the pole assembly, housing and battery provided by the utility model, since an anti-oxidation conductive part is provided on one side of the pole body, the side of the anti-oxidation conductive part away from the pole body is used for connection with an external circuit, and the anti-oxidation conductive part has an anti-oxidation function and will not generate an insulating aluminum oxide film in the air, it is possible to avoid poor contact between the pole assembly and the external circuit, and the anti-oxidation conductive part can achieve electrical conduction between the pole and the external circuit, thereby improving the stability and reliability of the connection between the battery and the external circuit as a whole. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments of the utility model will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic structural diagram of a pole assembly in one embodiment of the utility model;

[0021] Figure 2 It is a schematic structural diagram of a housing in one embodiment of the utility model;

[0022] Figure 3 It is a schematic structural diagram of a battery in one embodiment of the utility model.

[0023] In the figure: 100 is the pole column body, 110 is the groove, 120 is the columnar part, 130 is the extension part, 200 is the anti-oxidation conductive part, 300 is the housing, 400 is the insulating layer, and 500 is the battery cell. Detailed implementation mode

[0024] In order to make the technical problems, technical solutions and beneficial effects solved by the present utility model more clearly understood, the following further details the present utility model in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model.

[0025] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "longitudinal", "radial", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present utility model. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0026] In the description of the present utility model, it should be noted that, unless otherwise clearly defined and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, and it can be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0027] Figure 1 is a schematic structural diagram of the outer shell in an embodiment of the present utility model, as Figure 1 shown, and with reference to Figure 2 、 Figure 3 ,the embodiment of the present utility model provides a pole column assembly, including a pole column body 100 and an anti-oxidation conductive part 200. The anti-oxidation conductive part 200 is arranged on one side of the pole column body 100 and is electrically connected to the pole column body 100. The side of the anti-oxidation conductive part 200 away from the pole column body 100 is used to be connected to an external circuit.

[0028] In the embodiment of the utility model, since an anti-oxidation conductive part 200 is provided on one side of the pole body 100, the side of the anti-oxidation conductive part 200 away from the pole body is used for connecting with an external circuit, and the anti-oxidation conductive part has an anti-oxidation function and will not generate an insulating aluminum oxide film in the air, thereby avoiding poor contact between the pole assembly and the external circuit, and the anti-oxidation conductive part 200 can realize electrical conduction between the pole and the external circuit, thereby improving the stability and reliability of the connection between the battery and the external circuit as a whole.

[0029] In one embodiment of the present invention, a groove 110 is provided on the pole body 100, and the anti-oxidation conductive member 200 is welded in the groove 110. This arrangement can avoid increasing the thickness of the pole assembly, thereby avoiding increasing the volume of the battery, and avoiding reducing the energy density of the battery.

[0030] Preferably, the cross section of the groove 110 is circular, and the anti-oxidation conductive part 200 is a sheet-like structural part with a circular cross section. The diameter of the groove 110 is 2~4mm, and the depth of the groove 110 is 0.05~0.2mm. The difference between the diameter of the groove 110 and the diameter of the anti-oxidation conductive part 200 is 0.2mm~0.8mm. The difference between the thickness of the anti-oxidation conductive part 200 and the depth of the groove 110 does not exceed 0.05mm. The thickness of the pole body 100 is not less than 0.25mm to avoid penetration of the pole body 100 during welding, causing leakage of the battery cell 500.

[0031] In an alternative embodiment of the present invention, the anti-oxidation conductive member 200 is a sheet-like structure and covers the pole body 100 .

[0032] In one embodiment of the present invention, the anti-oxidation conductive member 200 is a nickel sheet. The nickel sheet is stable in the air, and this property ensures its stability and reliability during long-term use.

[0033] In an alternative embodiment of the present invention, the anti-oxidation conductive member 200 is a stainless steel sheet, and a nickel layer is plated on the side of the stainless steel sheet away from the pole body 100. The surface of the nickel-plated stainless steel sheet has the characteristics of high hardness, strong corrosion resistance, good wear resistance, and excellent conductivity.

[0034] In an alternative embodiment of the present invention, the anti-oxidation conductive member 200 is a gold-sprayed layer or a gold-plated layer formed on the surface of the pole body 100. When the anti-oxidation conductive member 200 is a gold-sprayed layer, the side of the pole body 100 can be directly sprayed with gold, or the pole body 100 can be sprayed with gold after the battery cell 500 is produced. When the anti-oxidation conductive member 200 is a gold-plated layer, the side of the pole body 100 can be directly plated with gold.

[0035] In one embodiment of the present invention, the pole body 100 includes a columnar portion 120 and an extension portion 130, the columnar portion 120 is arranged on one side of the extension portion 130, and the anti-oxidation conductive part 200 is located on the side of the extension portion 130 away from the columnar portion 120, so that the extension portion is connected to the shell 300, and the columnar portion is connected to the battery cell 500.

[0036] Furthermore, the projection of the columnar portion 120 in the direction of the extension portion 130 covers the projection of the anti-oxidation conductive member 200 in the direction of the extension portion 130. This arrangement can reduce the impact of the groove 110 on the pole body 100, and can also prevent the pole body 100 from being penetrated during welding, causing leakage of the battery cell.

[0037] like Figure 2 As shown, the embodiment of the utility model further provides a housing, comprising a housing 300 and a pole assembly in any of the above embodiments, so as to have all the effects of the pole assembly. The housing 300 is provided with an opening, the pole body 100 is sealed at the opening, and the anti-oxidation conductive member 200 is located on a side of the pole body 100 away from the opening.

[0038] In one embodiment of the utility model, an insulating layer 400 is provided between the pole body and the shell 300. Since the insulating layer 400 is placed between the shell 300 and the pole body 100, polarity insulation and sealing of the battery are formed. The insulating layer 400 is preferably made of PP, PEEK, PI composite glue or other plastic materials, so that the insulating layer 400 can be hot-pressed and glued.

[0039] like Figure 3 As shown, the embodiment of the utility model further provides a battery, comprising a battery cell 500 and a housing in any of the above embodiments, so as to have all the effects of the housing. The battery cell 500 is arranged in the housing.

[0040] The embodiments described above are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments may still be modified, or some of the technical features may be replaced by equivalents. Such modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention, and should be included in the protection scope of the present invention.

Claims

1. A pole assembly, characterized in that: It comprises a pole body and an anti-oxidation conductive part, wherein the anti-oxidation conductive part is arranged on one side of the pole body and is electrically connected to the pole body, and the side of the anti-oxidation conductive part away from the pole body is used for connecting with an external circuit.

2. The pole assembly according to claim 1, characterized in that: The pole body is provided with a groove, and the anti-oxidation conductive part is arranged in the groove.

3. The pole assembly according to claim 2, characterized in that: The diameter of the groove is 2-4 mm, and the depth of the groove is 0.05-0.2 mm.

4. The pole assembly according to claim 3, characterized in that: The difference between the diameter of the groove and the diameter of the anti-oxidation conductive member is 0.2 mm to 0.8 mm; The difference between the thickness of the anti-oxidation conductive member and the depth of the groove does not exceed 0.05 mm.

5. The pole assembly according to claim 1, characterized in that: The anti-oxidation conductive member is a nickel sheet or a stainless steel sheet, and a side of the stainless steel sheet facing away from the pole body is plated with a nickel layer; Alternatively, the anti-oxidation conductive member is a gold-sprayed layer or a gold-plated layer formed on the surface of the pole body.

6. The pole assembly according to claim 1, characterized in that: The pole body comprises a columnar portion and an extension portion, the columnar portion is arranged on one side of the extension portion, and the anti-oxidation conductive member is located on a side of the extension portion away from the columnar portion.

7. The pole assembly according to claim 6, characterized in that: The projection of the columnar portion in the direction of the extending portion covers the projection of the oxidation preventing conductive member in the direction of the extending portion.

8. A housing, characterized in that: It comprises a shell and a pole assembly as claimed in any one of claims 1 to 6; the shell is provided with an opening, the pole body is sealed at the opening, and the anti-oxidation conductive part is located on a side of the pole body away from the opening.

9. The housing according to claim 8, characterized in that An insulating layer is provided between the pole body and the shell.

10. A battery, characterized in that: The invention comprises a battery core and a casing as claimed in claim 8 or 9, wherein the battery core is arranged in the casing.

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